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Investigation of interface between asphalt core and gravel

Investigation of interface between asphalt core and gravel

Investigation of interface between asphalt core and gravel ...

Oct 10, 2018  The asphalt core is located between the upstream and downstream transition zones that are simultaneously placed and compacted in the central part of the embankment dam to form a strong interlocking asphalt core–gravel transition zone (AC-GTZ) interface. The asphalt core usually settles a little more than the transition zones during dam ...

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Investigation of interface between asphalt core and gravel ...

Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core

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(PDF) Investigation of asphalt core-plinth connection in ...

Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core

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Design and performance of the Quxue asphalt-core rockfill dam

and SBS asphalt mastic should be used between the core and plinth (Wang et al., 2017a). Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core was interlocked with the coarse gravel particles even when the interface zone was sheared by large ...

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Design and performance of the Quxue asphalt-core

Aug 01, 2020  The asphalt core-gravel interface is strongly interlocked, but with time the core tends to settle more than the transition zones due to the core’s creep behavior. Field measurements from other ACRDs show maximum settlement differences between the asphalt core and transition zones to be in the range of 20–50 mm (Wang et al., 2010).

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Weibiao Wang's research works Ministry of Water ...

Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core

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Shear behavior of hydraulic asphalt concrete at different ...

Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core

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(PDF) Investigation of asphalt core-plinth connection in ...

Wang et al. (2018) also investigated the interface behavior between the asphalt core and the adjacent gravel transition zones and found that the asphalt core was interlocked with the coarse gravel ...

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PAVEMENT INVESTIGATION FOR LOCAL ROAD PROJECTS ...

Select a reclamation depth that will provide a blend of asphalt and granular base/subbase material meeting Section M.02.06 Grading B requirements. It is generally recommended that this blend not consist of more than 50% asphalt pavement, and typically would include an approximate 40% ratio of asphalt and 60% ratio of granular material.

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Investigation on the properties of aggregate-mastic ...

Feb 01, 2021  It is hard for SBS asphalt with a high viscosity to flow into these micro-voids, weakening the interaction between the aggregate gravel and asphalt. By comparing these two adhesion indexes in Fig. 20 , Fig. 21 , it can be concluded that asphalt’s exfoliation degree of aggregate was dominated by aggregate micro-void, aggregate morphology and ...

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The Asphalt Core Embankment Dam A Very Competitive

- Field performance has been excellent, with no recorded leakage through core or the core-plinth interface at the base of the core. Laboratory testing of asphalt concrete For each new dam and site tests are performed to determine the optimum asphalt concrete mix using: - the available (local) aggregates (0 -18 mm); - filler material (0 - 0. 075 ...

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DRAFT July 2021 Design Life of Proposed Pavement

without proper investigation of the existing pavement layer depths and subsurface material composition. ... this is generally accomplished by avoiding the interface between existing pavement layers with the selected mill depth – staying slightly above an ... gravel, or both (fine graded, coarse graded, or

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Guide for Conducting Forensic Investigations of Highway ...

115 PAVEMENT FORENSIC INVESTIGATION CORE LOG (Multi Core) Form #17b Investigation Name Investigation # 201 1 /06 Plan Reference Date Sampled 201 1 /06/1 8 Drill Notes Core Size 4 Coolant A W Core# Location Layer Thickness Observations and Distress Description Photo 1 21 .25 4 1 2 NO DISTRESS Y 2 21 .50 4 1 2 â N 3 21 .75 4 1 2 â N 4

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An Introduction to Using Surface Geophysics to ...

continuity between sampling sites to upgrade the confidence of reserve calculations from probable reserves to proved reserves. Perhaps the greatest value of geophysics to aggregate producers may be the speed of data acquisition, reduced overall costs, and improved subsurface characterization. S and and gravel are components of a commodity

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Mechanical Behaviour of Cement-Bound Gravels by Experiment ...

This paper presents a hierarchical multi-scale modelling approach devoted to investigating the mechanical behaviour of cement-bound gravels. Material studied is based on Non-Hazardous Waste Incineration (NHWI) bottom ashes. The elastic moduli of NHWI particles have been previously determined by an original indentation campaign never conducted so far on these

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Thickness evaluation of asphalt and base layers of some ...

The estimated average dielectric constant of the asphalt layers were found to range between 5.2 and 6.7 respectively in the older and newly built roads and the variations of the estimated dielectric values along the newly built roads were used to locate low some low density areas of the asphalt course at the asphalt-base interface.

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US20140149416A1 - System and method for asset management ...

US20140149416A1 US14/171,414 US201414171414A US2014149416A1 US 20140149416 A1 US20140149416 A1 US 20140149416A1 US 201414171414 A US201414171414 A US 201414171414A US 2014149416 A1 US2014149416 A1 US 2014149416A1 Authority US United States Prior art keywords asset information reporting source reporting database Prior art date

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EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

high-strength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and coarse aggregate contents with aggregate volume factors (ACI 211.1-91) of0.75 and 0.67.

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LEVEE COMPONENTS – Levee Safety

Jul 11, 2019  Revetments act as the interface between the levee slopes (waterside and landside) and the external environment providing protection against external erosion caused by: wave action and currents on the waterside; surface runoff, overflowing and overtopping on the landside. Typically, revetments consist of grass, rip-rap, geotextile and asphalt.

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An investigation of the Australian Layered Elastic ... - CORE

These APSDS implied material equivalences lie at the lower end of the ranges published by FAA. In order to obtain consistence between APSDS and the FAA guidance, the following material equivalence values are recommended: Asphalt for Crushed Rock. 1.3; Crushed Rock for Uncrushed Gravel. 1.2; Asphalt for Uncrushed Gravel. 1.6.

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Pavement Design Characteristics of In-Service Asphalt Mixtures

152-mm (4- or 6-in) inside diameter core barrel. The cores were sawed at the interface between lifts so that each specimen represented its respective lift. At least 10 specimens from each project were selected randomly and tested with the repeated load indirect tensile test; 3 to 5 specimens were tested under a single, slowly ap­

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Pavement Design Characteristics of In-Service Asphalt Mixtures

152-mm (4- or 6-in) inside diameter core barrel. The cores were sawed at the interface between lifts so that each specimen represented its respective lift. At least 10 specimens from each project were selected randomly and tested with the repeated load indirect tensile test; 3 to 5 specimens were tested under a single, slowly ap­

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TASK 210 SUBSURFACE SITE INVESTIGATION REPORT

Task 210 Subsurface Site Investigation 2 January 2019 Central Warehouse, Rocky Hill, CT State Project No. 170-3476 1.4 Geologic/Physical Setting As indicated on the Surficial Materials Map of Connecticut (Stone et al, 1992), the site is located in an area of sand and gravel overlying sand. The area consists of sand and gravel up to

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Read "Guide for Conducting Forensic Investigations of ...

B.4.2 Preliminary Investigation A desktop study indicated that the original project design included 9.3 in. (235 mm) of asphalt concrete on 6.0 in. (150 mm) of crushed aggregate base and 12 in. (300 mm) of select material, over a highly plastic clay subgrade with bedrock near the surface.

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Guide for Conducting Forensic Investigations of Highway ...

115 PAVEMENT FORENSIC INVESTIGATION CORE LOG (Multi Core) Form #17b Investigation Name Investigation # 201 1 /06 Plan Reference Date Sampled 201 1 /06/1 8 Drill Notes Core Size 4 Coolant A W Core# Location Layer Thickness Observations and Distress Description Photo 1 21 .25 4 1 2 NO DISTRESS Y 2 21 .50 4 1 2 â N 3 21 .75 4 1 2 â N 4

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Innovative Forensic Investigation of a Dramatic Pavement ...

downtown core. Figure 3 provides the location of the roadway section. 14 Street NW Stud. y Limits. Figure 3: Map Showing Location of the 14 Street NW Project. The majority of the distress was exhibited by the northbound lanes. The pavement distresses included severe heave and blow-outs of the asphalt concrete surfacing.

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Investigation of Cement-Emulsified Asphalt in Plastic Concrete

Apr 03, 2018  The mechanical, mesodamage, and the microproperties of cement-emulsified asphalt concrete have been investigated by computed tomography (CT), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TG) in this work. Emulsified asphalt delayed the hydration of cement, making the early compressive strength of

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DRAFT July 2021 Design Life of Proposed Pavement

without proper investigation of the existing pavement layer depths and subsurface material composition. ... this is generally accomplished by avoiding the interface between existing pavement layers with the selected mill depth – staying slightly above an ... gravel, or both (fine graded, coarse graded, or

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GUIDELINES FOR EMBANKMENT CONSTRUCTION

the interface. This occurs because the existing hillside is inherently different than the constructed embankment. The standard treatment provides a more gradual transition between the fill and the cut. Figure 3 Gradual Transition Between Cut and Fill 2.3 Unstable Foundation

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PAVING ASPHALT PROPERTIES AND PAVEMENT DURABILITY

Asphalt cement samples were obtained from mix and field core specimens by the immersion-reflux method of extraction and the Abson method of recovery (ASTM Desig­ nation D1856-65). Benzene was used as the solvent to minimize any chemical reaction between solvent and asphalt during the contact time of the recovery process. RESULTS AND DISCUSSION

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Evaluation of the mechanical behaviors of cement ...

Jun 06, 2015  Figure 14 shows the interface of cement and asphalt film. As can be seen, there are gaps between them and a small amount of hydration products are embedded into the asphalt film. The phenomenon of asphalt film covering cement leads to the increases interface thickness and decreases water migration toward the aggregate surface.

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ERDC Knowledge Core: Technical Report

ERDC/GSL TR-03-12 - A Study of Effective Moment of Inertia Models for Full-scale Reinforced Concrete T-beams Subjected to a Tandem-axle Load Configuration [1] ERDC/GSL TR-03-13 - Third U.S.-Japan Workshop on Advanced Research on Earthquake Engineering for Dams, San Diego, California, 22-23 June 2002 [1]

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CORE

These APSDS implied material equivalences lie at the lower end of the ranges published by FAA. In order to obtain consistence between APSDS and the FAA guidance, the following material equivalence values are recommended: * Asphalt for Crushed Rock. 1.3. * Crushed Rock for Uncrushed Gravel. 1.2. * Asphalt for Uncrushed Gravel. 1.6.

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LEVEE COMPONENTS – Levee Safety

Jul 11, 2019  Revetments act as the interface between the levee slopes (waterside and landside) and the external environment providing protection against external erosion caused by: wave action and currents on the waterside; surface runoff, overflowing and overtopping on the landside. Typically, revetments consist of grass, rip-rap, geotextile and asphalt.

get price

US20080086391A1 - Impromptu asset tracking - Google Patents

US20080086391A1 US11/801,090 US80109007A US2008086391A1 US 20080086391 A1 US20080086391 A1 US 20080086391A1 US 80109007 A US80109007 A US 80109007A US 2008086391 A1 US2008086391 A1 US 2008086391A1 Authority US United States Prior art keywords asset information reporting database report Prior art date 2006-10-05 Legal status

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